Home / 21,571.04-29,679-16,847.12

Finding the Fourth Proportional to 21,571.04, 29,679 and 16,847.12

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Solution

The fourth proportional to 21,571.04, 29,679 and 16,847.12 is: 23,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.04 : 29,679 = 16,847.12 : x
  2. Step 2: Convert to fraction form
    21,571.04/29,679 = 16,847.12/x
  3. Step 3: Cross multiply
    21,571.04x = 29,679 × 16,847.12
  4. Step 4: Simplify right side
    21,571.04x = 500,005,674.48
  5. Step 5: Solve for x
    x = 500,005,674.48/21,571.04
  6. Step 6: Final answer
    x = 23,179.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.